Electrical regulator



M. R. SHEDD.

ELECTRICAL REGULATOR.

APPLICATION FILED NOV. 23, 1915.

1,372,097, Patented Mar. 22, 1921.

INV TOR W 4% a W TTOR NE Y5 UNITED STATES PATENT OFFICE.

HABCELLUS B. SHE-DD, OF LANCASTER. NEW YORK, ASSIGNOB TO GOULD COUPLER COMPANY, A CORPORATION OF NEW YORK.

ELECTRICAL REGULATOR.

Specification of Letters Patent. Patented )[ar 22, 1921.

Application filedliovember 23, 1915. Serial No. 63,012.

To all whom it may concern Be it known that I. MancnnLt's R. SHEDD, a citizen of the United States, and a resident of Lancaster, county of Erie, State of New York, have invented certain new and useful Improvements in Electrical Regulators,

' of which the following is a specification.

My invention relates to improvements in electric regulators. and more particularly to regulators adapted to vary the resistance of a circuit by means of a carbon pile form of variable resistance, or other type. the resistance of which is varied by variations in pressure thereon; While my improvements are particularly adapted for the regulation of generators in car lighting systems, it will be clear that the invention 1s capable of use in many other situations.

The'main object of the invention is to provide an improved regulator of the carbon pile type. which is extremely sensitive, simple and efiicient in construction and op eration. Further and more specific objects, features and advantages will more clearly appear from the detailed description given below, taken in connection with the accompanying drawing which forms a part of this specification;

The drawing illustrates a regulator em" bodying my improvements in one form, certain parts being shown in section, to more clearly illustrate the same, also in connection with an electrical system of main features of which are matically.

Referring to the drawing. 1 represents a generator hi'ch may be driven at variable speed, to supply the storage battery 2, and lamps or other translating devices at 3. The generator shimtfield is shown at 4, having in series therewith a carbon pile resistance 5. A lever 6, pivoted at 7, is adapted shown diagramto operate upon one end of said carbon pile.

and a lever 8, pivoted at 9. is adapted to operate upon the other end of said carbon pile. .The ends of the long arms of said levers are mechanically connected together by means of pin 10. secured to the lever 6, operating in a slot 23 in the end of lever 8. The end of the lever 6 is also provided with a knife edge 11 enga, a member '12. The member 12 is provide with apertures in I each end. Operating through the aperture on the right hand end of the member 12 is a spindle 13on a core or plunger 14, adapted distribution, the

to pulled up by a solenoid 15, connected in circuit between the generator 1 and the ,battery 2. A dashpot 16 is provided for knife edge 11 causes lever6 to rock about its pivot T. to increase the resistance of the pile 5. By reason of the pin and slot connecting l0 and 23, lever 8 is also caused to rock aboutits pivot 9. to operate on the other end of the pile to increase the resistance of the pile atthat end simultaneously. A spindle 18 operates in the aperture on the other end of the member 12. the spindle being connected to a core 19, adapted to be pulled up by a solenoid 20, connected across the generator 1. A das'hpot 21 is provided for damping the movement of the plunger 19. Spindle 18 isalso provided with a pin 22, engaging the underneath side of the member 12, so that upon core 19 being pulled up, pin 22 forces the other end of member 12 upwardly, and in a similar manner, operates .both of the levers 6 and S, which similarly varies the resistance of the pile 5, by operation at both ends. T hus. if the current from the generator exceed a certain value, magnet 15 operates on the member 12, the pin 22 acting as a fulcrum. to actuate both of the lever members 6 and S, to increase the resistance in the pile 5, to weaken the generator field. to maintain the currentoutput substantially constant. If thevoltage tend to increase above the desired value, the voltage magnet 20 will raise its plunger 19, and cause the member 12 to be raised at the other end. the in 17 acting as a fulcrum, similarly operating both the lever members to increase the'resistance in series with the generator shunt field, to keep the voltage within the desired limits.

This causes a weakening of the current magbroader aspects. For instance, any other type of reslstance medium, Whose resistance varies with variations in pressure, may be used instead of the carbon disk type.

In a copending application filed b me, Serial No. 63011, filed Nov. 23, 1915, have disclosed the regulator herein claimed as part of the electrical system which is claimed in said application, the claims herein being confined to the regulator independent of the system in which it may be employed.

Having fully and clearly described my improvements, what I claim and desire to secure by Letters Patent is:

1. An electric regulator having-in combination a carbon pile, a lever operating on one end of the pile, a lever operating on the other end of the pile, a member, the movement of which actuates both of said levers to vary the resistance of said ile, and two magnets adapted to move sai member independently of one another.

2. An electric regulator having in combination a carbon pile, a member operating on one end of said pile to vary the resistance thereof, a member'operating on the other end of said pile to varythe resistance thereof, a member adapted to move both of said first two mentioned members and two soleniods one having a core acting on one end of said third member and the other having a core acting on the other end of said third member, whereby movement of either core acts to vary the resistance of the pile at both ends thereof.

3. An electric regulator having in combination a carbon pile, mechanism operating said pile to vary its resistance, two electromagnets, separately movable armatures for said electromagnets respectively, each of said armatures upon being sufiiciently attracted by its electromagnet, being adapted to cause said mechanism to operate on both ends of the pile substantially simultaneously to increase the resistance of said pile at both ends thereof independently of the other armature.

4.- An electric regulator having in combination a carbon'pile, a movable head at each end thereof, a pivoted lever connected with each head and a lever actuating member arranged tov be independently moved at either of two points thereon to produce a desired movement of both levers Without changing the position of the other of said points.

5. An electric regulator comprising a car'- bon pile, two movable heads therefor, an operating lever connected with each head, a member arranged to move said levers simultaneously in response to the movement of a given part of said member, and independent means operating upon said member, one at each side of said given part.

6. An electric regulator comprising a carbon pile, two movable heads therefor, an operating lever connected with each head, a member arranged to move sald levers simultaneously in response to the movement of a given part of said member, and magnets operatlng upon said member one at each side of said iven part.

In testimony w ereof, I have signed my name to this s ecification.

ARCELLUS R. SHEDD. 

